Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790559
Fan Yu, Xue-xia Yang, S. Gao
Energy is the promoter of human civilization. Before Marconi successfully transmitted radio telegraph over the Atlantic, Tesla proposed transferring power by electromagnetic (EM) wave wirelessly. Over 120 years passed, we are now getting closer to wireless power transmission (WPT) technology. In most applications, such as point to multi-point, multi-point to point, and long distance, it is a hard work to align the polarization and incident directions between the transmitter and receiver. On the other hand, our environment is filled with EM waves on different operation bands with the rapid development of various wireless communication technologies. Recycling these EM power is significant for ever-lasting development of human society. Thus, the EM energy receiver is required to has the characteristics of broadband, polarization insensitive and wide incident angle. Metasurface, composed of periodically arranged subwavelength elements, shows outstanding characteristics in WPT and energy harvesting, such as compactness, insensitive polarization operation and wide incident angle. Integrated with rectifier diodes, the metasurface could be an excellent candidate to meet demand for WPT and energy harvesting [2] – [3] .
{"title":"Broadband Wide-Angle Polarization-Independent Rectifying Metasurface for Wireless Power Transfer and Energy Harvesting : (Invited talk)","authors":"Fan Yu, Xue-xia Yang, S. Gao","doi":"10.1109/iwem53379.2021.9790559","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790559","url":null,"abstract":"Energy is the promoter of human civilization. Before Marconi successfully transmitted radio telegraph over the Atlantic, Tesla proposed transferring power by electromagnetic (EM) wave wirelessly. Over 120 years passed, we are now getting closer to wireless power transmission (WPT) technology. In most applications, such as point to multi-point, multi-point to point, and long distance, it is a hard work to align the polarization and incident directions between the transmitter and receiver. On the other hand, our environment is filled with EM waves on different operation bands with the rapid development of various wireless communication technologies. Recycling these EM power is significant for ever-lasting development of human society. Thus, the EM energy receiver is required to has the characteristics of broadband, polarization insensitive and wide incident angle. Metasurface, composed of periodically arranged subwavelength elements, shows outstanding characteristics in WPT and energy harvesting, such as compactness, insensitive polarization operation and wide incident angle. Integrated with rectifier diodes, the metasurface could be an excellent candidate to meet demand for WPT and energy harvesting [2] – [3] .","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"volume1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130427161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790413
Li Yang, Liu Zhihui
This paper introduces a Vivaldi-type wide-band and wide-scan all-metal phased array antenna. By using multi-segment feeding structure derived from binomial matching transformer, together with absorbing material impedance loading technology, the bandwidth extends towards low frequency and wide-scan properties is realized. In this paper, theory and design methodology are formulated, and followed by a concise set of design guidelines. A test array of 15*18 elements is fabricated, and the measured results show that the vswr ＜2.5 within 45° scan range from 6.5 to 12GHz is obtained. As seen, the antenna has good wide-band and wide-scan capabilities, along with its good manufacturability and high power withstand, the antenna is potentially suitable for applications in phased array radar field.
{"title":"An Element of Wide-band and Wide-scan Phased Array Antenna","authors":"Li Yang, Liu Zhihui","doi":"10.1109/iwem53379.2021.9790413","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790413","url":null,"abstract":"This paper introduces a Vivaldi-type wide-band and wide-scan all-metal phased array antenna. By using multi-segment feeding structure derived from binomial matching transformer, together with absorbing material impedance loading technology, the bandwidth extends towards low frequency and wide-scan properties is realized. In this paper, theory and design methodology are formulated, and followed by a concise set of design guidelines. A test array of 15*18 elements is fabricated, and the measured results show that the vswr ＜2.5 within 45° scan range from 6.5 to 12GHz is obtained. As seen, the antenna has good wide-band and wide-scan capabilities, along with its good manufacturability and high power withstand, the antenna is potentially suitable for applications in phased array radar field.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127846038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790475
Sifan Wu, Juan Chen
A frequency- and pattern-reconfigurable rotatable antenna array is proposed in this paper. The frequency-tunable mechanism is achieved by varying the capacitance value of the loaded varactor and the rotatable motion of the antenna structure, which contains three two-element arrays. Two independent bias voltages provide the pattern reconfigurability for each two-element array. It is achieved by introducing phase shift between the two array elements. The mechanism of quasi-Yagi antenna is used to enhance the gain. The proposed design has a frequency-tunable band from 2.66 GHz to 3.72 GHz, and a maximum continuously beam-scanning angles from −28° to +29° across broadside.
{"title":"A Frequency- and Pattern-Reconfigurable Rotatable Antenna Array","authors":"Sifan Wu, Juan Chen","doi":"10.1109/iwem53379.2021.9790475","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790475","url":null,"abstract":"A frequency- and pattern-reconfigurable rotatable antenna array is proposed in this paper. The frequency-tunable mechanism is achieved by varying the capacitance value of the loaded varactor and the rotatable motion of the antenna structure, which contains three two-element arrays. Two independent bias voltages provide the pattern reconfigurability for each two-element array. It is achieved by introducing phase shift between the two array elements. The mechanism of quasi-Yagi antenna is used to enhance the gain. The proposed design has a frequency-tunable band from 2.66 GHz to 3.72 GHz, and a maximum continuously beam-scanning angles from −28° to +29° across broadside.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126844127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iWEM53379.2021.9790666
Lei Li, Xiang Wu, Guokai Jiang, Jiaxu Feng, Xiang Zhang
As one of the most promising on-board applications, C-V2X (Cellular Vehicle-to-Everything) technology is designed to improve road safety and efficiency. How to effectively evaluate the performance of C-V2X products is also one of concerns of the industry. In this paper, a novel performance test method which called virtual driving test (VDT) is proposed, based on which the signal propogation environment on real roads can be reproduced in laboratories. Test results show that the deviation of RSRP and SINR between outdoor environment and the VDT system is less than 1dB, delay deviation is less than 1ms, and packet loss rate (PLR) curves almost coincide.
{"title":"A Virtual Driving Testing Method for C-V2X Performance Evaluation","authors":"Lei Li, Xiang Wu, Guokai Jiang, Jiaxu Feng, Xiang Zhang","doi":"10.1109/iWEM53379.2021.9790666","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790666","url":null,"abstract":"As one of the most promising on-board applications, C-V2X (Cellular Vehicle-to-Everything) technology is designed to improve road safety and efficiency. How to effectively evaluate the performance of C-V2X products is also one of concerns of the industry. In this paper, a novel performance test method which called virtual driving test (VDT) is proposed, based on which the signal propogation environment on real roads can be reproduced in laboratories. Test results show that the deviation of RSRP and SINR between outdoor environment and the VDT system is less than 1dB, delay deviation is less than 1ms, and packet loss rate (PLR) curves almost coincide.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126923174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iWEM53379.2021.9790572
Yuni Liang, Kai‐Ran Xiang, Yong Dong, Fulong Chen, Y. Wang
A printed filtering dipole antenna (PFDA) is investigated. The proposed PFDA consists of a pair of identical arms separately placed on the both sides of the substrate plate. Two half-wavelength resonators are used for feeding one arm of the dipole. Cross coupling is introduced in this design to achieve one radiation null at the upper stopband, which makes the proposed antenna have a good out-of-band suppression. The impedance bandwidth of the PFDA is 10%, and its ports isolation is higher than 19 dB.
{"title":"Design of Dual Polarized Filtering Dipole Antenna","authors":"Yuni Liang, Kai‐Ran Xiang, Yong Dong, Fulong Chen, Y. Wang","doi":"10.1109/iWEM53379.2021.9790572","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790572","url":null,"abstract":"A printed filtering dipole antenna (PFDA) is investigated. The proposed PFDA consists of a pair of identical arms separately placed on the both sides of the substrate plate. Two half-wavelength resonators are used for feeding one arm of the dipole. Cross coupling is introduced in this design to achieve one radiation null at the upper stopband, which makes the proposed antenna have a good out-of-band suppression. The impedance bandwidth of the PFDA is 10%, and its ports isolation is higher than 19 dB.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121561477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790606
Pengcheng Cao, Yong Lu, Changbo Lu
Because of the skin effect, the high-frequency current of wireless power transfer (WPT) is concentrated on the surface of coils. To realize the lightweight of the WPT device, the tubular coupler with skin effect is a method to optimize the coil weight. In addition to the common copper tube as the coupler, the aluminum tube coated with a thin layer of copper is proposed as the coupler coil in this letter. This novel coupler not only reduces the weight but also ensures the transmission efficiency. The experimental results show that the weight of Coppersurfaced Aluminum Tubes (CAT) is reduced by 36g than copper tubes. The power gain is slightly reduced by 2.1% at 13.56 MHz. The gain weight ratio (GWR) is increased by 1.7 times. This new structure tubular coupler is more suitable for applications which need lightweight requirements urgently.
{"title":"A Novel Tubular Coupler Application in Wireless Power Transfer","authors":"Pengcheng Cao, Yong Lu, Changbo Lu","doi":"10.1109/iwem53379.2021.9790606","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790606","url":null,"abstract":"Because of the skin effect, the high-frequency current of wireless power transfer (WPT) is concentrated on the surface of coils. To realize the lightweight of the WPT device, the tubular coupler with skin effect is a method to optimize the coil weight. In addition to the common copper tube as the coupler, the aluminum tube coated with a thin layer of copper is proposed as the coupler coil in this letter. This novel coupler not only reduces the weight but also ensures the transmission efficiency. The experimental results show that the weight of Coppersurfaced Aluminum Tubes (CAT) is reduced by 36g than copper tubes. The power gain is slightly reduced by 2.1% at 13.56 MHz. The gain weight ratio (GWR) is increased by 1.7 times. This new structure tubular coupler is more suitable for applications which need lightweight requirements urgently.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123009963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790570
Zhiping Li, Yongheng Zhao, Peng Huo
The aims of this work are to propose a fast and efficient spherical wave synthesis (SWS) approach and demonstrate the physical feasibility of emulating desired spherical wave in a compact range by a reflector compact zoom range (CZR). The intersection approach (IA) and near-field (NF) transmission in the spatial and angular spectrum domain is fundamental theory of the SWS approach. The goal of the SWS approach is calculating the aperture source plane field that can generate a required spherical wave in test quiet zone (QZ). To find the intersection of achieved aperture source plane field and desired aperture source plane field, alternating projection (AP) correction is applied in the SWS approach. A Fourier transform pair relates the near field between the spatial and the angular spectrum domain, so Fast Fourier Transform (FFT) is utilized to accelerate AP correction between the aperture source plane and spherical wave field plane. The aperture source field calculated by the SWS approach is mathematical foundation of generating variable spherical wave in a compact range. For validating the physical feasibility of synthesizing a variable spherical wave environment, a reflector CZR is designed and simulated a high-performance spherical wave whose virtual source is 200 m away from QZ by full wave tool.
{"title":"Emulating Variable Spherical Wave by Compact Zoom Range","authors":"Zhiping Li, Yongheng Zhao, Peng Huo","doi":"10.1109/iwem53379.2021.9790570","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790570","url":null,"abstract":"The aims of this work are to propose a fast and efficient spherical wave synthesis (SWS) approach and demonstrate the physical feasibility of emulating desired spherical wave in a compact range by a reflector compact zoom range (CZR). The intersection approach (IA) and near-field (NF) transmission in the spatial and angular spectrum domain is fundamental theory of the SWS approach. The goal of the SWS approach is calculating the aperture source plane field that can generate a required spherical wave in test quiet zone (QZ). To find the intersection of achieved aperture source plane field and desired aperture source plane field, alternating projection (AP) correction is applied in the SWS approach. A Fourier transform pair relates the near field between the spatial and the angular spectrum domain, so Fast Fourier Transform (FFT) is utilized to accelerate AP correction between the aperture source plane and spherical wave field plane. The aperture source field calculated by the SWS approach is mathematical foundation of generating variable spherical wave in a compact range. For validating the physical feasibility of synthesizing a variable spherical wave environment, a reflector CZR is designed and simulated a high-performance spherical wave whose virtual source is 200 m away from QZ by full wave tool.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122343292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790445
Zhaokai Wang, Jiantao Qu, Yang Gao
High-Q waveguide resonators have become more commonplace since the losses of planar circuit are significant at higher frequencies. In amplifiers design, three-dimensional (3D) waveguide cavities are often employed as the matching networks of the planar circuits including the transistor. Thus, the interconnection of the waveguide-to-microstrip transition and the feedback of the transistor itself make the calculation and optimization of the physical model more difficult. The neural network technique can be used in the electromagnetic (EM) optimization of the waveguide amplifiers, leading to improved design efficiency.
{"title":"Neural Network Enhanced Optimization of the Microwave Waveguide Amplifiers","authors":"Zhaokai Wang, Jiantao Qu, Yang Gao","doi":"10.1109/iwem53379.2021.9790445","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790445","url":null,"abstract":"High-Q waveguide resonators have become more commonplace since the losses of planar circuit are significant at higher frequencies. In amplifiers design, three-dimensional (3D) waveguide cavities are often employed as the matching networks of the planar circuits including the transistor. Thus, the interconnection of the waveguide-to-microstrip transition and the feedback of the transistor itself make the calculation and optimization of the physical model more difficult. The neural network technique can be used in the electromagnetic (EM) optimization of the waveguide amplifiers, leading to improved design efficiency.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125090081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790705
Cheng Liu, Hongjin Wang, D. Ding, Lixia Yang
This paper proposes a millimeter wave dual-polarized antenna design for 5G application. It is based on a multilayer PCB structure and is fed by two differential feeding networks. The antenna consists of a rectangular driven patch with four cut corners, four sector stacked patches, and two differential feeding networks. The antenna is based on a multilayer PCB structure for cheap packaging. High polarization isolation and low cross polarization level are achieved through differential feeding networks. The prototype of the antenna is fabricated and measured. The proposed millimeter wave dual-polarized antenna covers 24.25-27.5 GHz (12.6%). The voltage standing wave ratio (VSWR) in this band is less than 1.5, the port isolation is greater than 34 dB, and the in-band gain is larger than 5.7 dBi. The 3-dB beam width is 75°±4°. The proposed design can provide a good solution for 5G millimeter wave communication.
{"title":"Design of Millimeter Wave Antenna for 5G Application","authors":"Cheng Liu, Hongjin Wang, D. Ding, Lixia Yang","doi":"10.1109/iwem53379.2021.9790705","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790705","url":null,"abstract":"This paper proposes a millimeter wave dual-polarized antenna design for 5G application. It is based on a multilayer PCB structure and is fed by two differential feeding networks. The antenna consists of a rectangular driven patch with four cut corners, four sector stacked patches, and two differential feeding networks. The antenna is based on a multilayer PCB structure for cheap packaging. High polarization isolation and low cross polarization level are achieved through differential feeding networks. The prototype of the antenna is fabricated and measured. The proposed millimeter wave dual-polarized antenna covers 24.25-27.5 GHz (12.6%). The voltage standing wave ratio (VSWR) in this band is less than 1.5, the port isolation is greater than 34 dB, and the in-band gain is larger than 5.7 dBi. The 3-dB beam width is 75°±4°. The proposed design can provide a good solution for 5G millimeter wave communication.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131221820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The high gain antenna of the Zhu-Rong Mars rover is introduced in this paper. The antenna is realized by a compact and light weight reflector. High gain antenna should not only provide uplink and downlink between the Mars and Earth but also transmit the data from the surface of the Mars to the Mars obiter. The important RF test results and environment test results are described in this paper.
{"title":"X Band High Gain Antenna for Zhu-Rong Mars Rover","authors":"Zhijia Liu, Jiangnian Duan, Q. Hou, Yixian Xu, Xiaoping Zhou, Chenghao Dai, Dayuan Sun, Fan Lu, Wei Ji, Zekai Wang, Miao Xiao","doi":"10.1109/iwem53379.2021.9790646","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790646","url":null,"abstract":"The high gain antenna of the Zhu-Rong Mars rover is introduced in this paper. The antenna is realized by a compact and light weight reflector. High gain antenna should not only provide uplink and downlink between the Mars and Earth but also transmit the data from the surface of the Mars to the Mars obiter. The important RF test results and environment test results are described in this paper.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127600899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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